[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [ANNOUNCE] Xen 4.15 - call for notification/status of significant bugs
Although there are a few things outstanding, we are now firmly into the bugfixing phase of the Xen 4.15 release. I searched my email (and my memory) and found four open blockers which I have listed below, and one closed blocker. I feel there are probably more issues out there, so please let me know, in response to this mail, of any other significant bugs you are aware of. Ian. OPEN ISSUES ----------- A. HPET/PIT issue on newer Intel systems Information from Andrew Cooper <andrew.cooper3@xxxxxxxxxx> | This has had literally tens of reports across the devel and users | mailing lists, and prevents Xen from booting at all on the past two | generations of Intel laptop. I've finally got a repro and posted a | fix to the list, but still in progress. I think Andrew is still on the case here. B. "scheduler broken" bugs. Information from Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Dario Faggioli <dfaggioli@xxxxxxxx> Quoting Andrew Cooper | We've had 4 or 5 reports of Xen not working, and very little | investigation on whats going on. Suspicion is that there might be | two bugs, one with smt=0 on recent AMD hardware, and one more | general "some workloads cause negative credit" and might or might | not be specific to credit2 (debugging feedback differs - also might | be 3 underlying issue). I reviewed a thread about this and it is not clear to me where we are with this. C. Fallout from MSR handling behavioral change. Information from Jan Beulich <jbeulich@xxxxxxxx> I am lacking an extended desxcription of this. What are the bug(s), and what is the situation ? D. Use-after-free in the IOMMU code Information from Julien Grall <julien@xxxxxxx> References [PATCH for-4.15 0/4] xen/iommu: Collection of bug fixes for IOMMU teadorwn <20201222154338.9459-1-julien@xxxxxxx> Quoting the 0/: | This series is a collection of bug fixes for the IOMMU teardown code. | All of them are candidate for 4.15 as they can either leak memory or | lead to host crash/host corruption. AFAIT these patches are not yet in-tree. CLOSED ISSUES ============= E. zstd support Information from Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Jan Beulich <jbeulich@xxxxxxxx> git Needed to unbreak Fedora. Needs support for both dom0 and domU. AFAICT this seems to be in-tree as of 8169f82049ef "libxenguest: support zstd compressed kernels"
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